Incandescent-lamp socket.



No. 737,114. l PATENTBD AUG. 25,- 1.903.-

0. E. KBNNBY.

. INANDESGBNT LAMP SOCKET. Arrnromlon'runn 111:11. 31,1902.

NO MODEL.

l handling.

OWEN E. KENNEY, OF TOLEDO, OHIO, ASSIGNOR TO THE YOST ELECTRIC MANUFACTURING COMPANY, vOF TOLEDO, OHIO, A CORPORATION OF OIIIO.

INCAN DESCENT.- L'MSP SOCKET.

SPECIFICATION formingpart of Lettersiatent No. 737,114, dated August 25, 1903.

Application filed December 31, 1902. Serial No. 137,336. (No model.)

To all whom it may concern:

Be itknown that I, OWEN E. KENNEY, a citi:v zen of the United States, residing at Toledo,

do hereby declare the following to bea full,

clear, and exact description of the invention,

such as will enable others skilled in the art to which it appertains to make and use the same. p

My invention relates to certain new and useful improvements in incandescentlamp sockets, and has for its object to provide an insulating-disk for what is commonly known as the base or cap of the socket which shall conform to the requirements of the underwriters in that itshall be` readily removable and which shall at the same time be securely held in position after being assembled at the factory and during transportation and My invention is designed especially for use with lamp-sockets such as shown and described in Letters Patent No. 712,685, granted to me November 4, 1902, and in which is shown and described a shell having open vertical slots with adjacent closed slots and a base or cap with interior radial projections adapted to pass vertically into the open slots of the shell and to be then interlocked with the ad? jacent slots.

With the objects described in view my invention consists in combining with the base or cap provided with interiorly-projectin g radial projections or studs acup-shaped disk of ber insulating material formed with p'eripheral slots corresponding with the radial projections on the interior of the base or cap and adapted to pass over said projections and to be held against accidental removal by rotating the same to carry lthe said peripheral slots out of register with the .radial projections of the base or cap, all asvwill be hereinafter eX- plained.

In order that those skilled in the art to which my invention appertains may know how to Patent hereinbefore referred to. top or plan View of my improved cup-shaped liber insulator.

'atented August 25, 1902i). 'Y

NPATIENT OFFICE.

Figure 1 is a perspective view of a shell and v i base or cap, such as is shown in the Letters Fig. 2 is a Fig. 3 is a central vertical section of the same, taken on the line a: of Fig. 2. Fig. 4 is a top or plan view of the base or cap with my improved disk insulator `in position and with the peripheral slots thereof in register with the interior radial projections of the base or cap; and Fig.5 is` a similar view showing the cupshaped insulatingdisk turned upon its axis so as to bring the peripheral slots out of register with thev radial projections of the base or cap, so that the latter will prevent the accidental separation of the cup-shaped disk from thel base or cap. v

Similar letters of reference indicate like parts in the several iigures of the drawings.

A representsthe shell, and B the base or cap, of an incandescent-1am p socket, such as shown and described in the Letters Patent hereinbefore referred to, and in which C are the vertical open slots and D the adjacent closed slots. v

H represents the interior radial projections 01' teats on the base or cap, which are designed to enter the vertical open slots O of the shell and to be interlocked with the closed slots D by a partial rotative movement relatively betweenthe base or cap B and the shell A,as fully described in the Letters Patent before referred to. j

E is my improved cup-shaped insulator, formed with a central opening E for the passage of the circuit-Wires and with two or more peripheral slots G, adapted to register with' and pass over the corresponding radial projections or teats H of the base orcapB, as clearly shown at Fig. 4, and to be then turnedA out of register with said radial projections or teats, as shown at Fig. 5, so that said teats shall operate to hold the oupshaped disk within the base or cap and against accidental disengagement or removal and so as to constitute a proper insulation of said base orcap.

When it is desired, in conformi-ty With therequirement of the underwriters, to remove the cup-shaped disk F., it is rotated so 'as to bring the peripheral slots G-thereof into register or alinement with the radial projections IOO or teats H, as shown at Fig. 4, when the cup shaped disk may be in an obvious manner removed from the base or cap. With this construction and arrangement the relative diametric and circumferential relation between the disk and the base or cap may be such that any expansion of the disk under atmospheric influences will not cause such close or binding contact between the periphery of the disk and the base or cap as occurs in constructions snch as are' at present made, and in which to preserve the temporary fixed relation between the insulator-disk and the base or cap the former is of slightly greater dialneter than the base or cap and is forced or sprungintoposition therein,andconseqnently when the disk is expanded under atmospheric conditions it becomes difficult and sometimes impossible to separate it from the base or cap.

I of course do not Wish to be limited in the number and location of the radial projections or teats H on the base or cap or the corresponding peripheral slotsGof the cup-shaped disk E so longr as the number and location of the same is such as to produce the result described.

Having described the construction and advantages of my improvement, what I claim as new, and desire to secure by Letters Patent, is-

In an incandescent-lamp socket, in combination with a shell having open slots and adjacent closed slots, and a base or cap provided with interior radial projections or teats, a disk insulator formed with peripheral slots adapted to pass over the radial projections or teats ofthe base or cap, and to be turned ont of register therewith to secure the disk against accidental separation from the base or cap, substantially as and for the purpose set forth.

In testimony whereof Ifaftix my signature in presence of two Witnesses.

OWEN E. KENNEY.

W'itnesses:

Jos. R. YosT, MARGUERITE A. ELY. 

